Hello

I had a Wordpress website wit the domain "bioskincare.com" in a hosting (let's call it A), and now i have a new hosting (B) and i want to move the site in the old hosting(A) to the new one (B) and with a new domain: "linkschile.com".

I did the following:

-I copied all the files from the folder "public_html" of the old hosting (A) to the new hosting(B).

-I went to the phpmyadmin of hosting A (the old one) and exported the database compressed in bzip.

-I created a new database in hosting B (the new one)and a user with full priviledges on it.

-Now i go to the phpmyadmin in hosting B (the new one) and go to "import", then i choose the bzip file that contains the database downloaded from hosting A (the database from the old site).

-When i do the last, i get this message:

consulta SQL:


--
-- Base de datos: `bioskin_cart`
--
CREATE DATABASE `bioskin_cart` DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;
MySQL ha dicho: Documentación

#1044 - Access denied for user 'linkschi'@'localhost' to database 'bioskin_cart'


It's impossible for me to create a databe and username with the same names from hosting A inhosting B, because both hosting services use a prefix for the name that i can't change.

What can i do?

It looks like you didn't get the permissions right.
Permissions for a user are always defined together with user's location. Make sure you set permissions for 'linkschi'@'localhost'. Also check what permissions you granted.
One thing could be that you try to create a database that you already have.
So log in to mysql on B and check the permissions:
SHOW GRANTS FOR 'linkschi'@'localhost'